Floating breakwater integrated with friction nanometer power generation device

Abstract

The invention provides a floating breakwater integrated with a friction nanometer power generation device, which is a semi-cylindrical box-shaped breakwater, a plurality of power generation units consisting of arc-shaped cavities, PTFE friction rods and metal electrode groups are arranged in the box-shaped breakwater, and each group of power generation units can supply power to an external load through an external power transmission line connected with the metal electrode groups. The device is simple and stable in structure and low in construction cost, can collect low-frequency wave energy, can be arranged in an offshore sea area, provides effective protection for an ocean platform where the sea area is arranged, can supply power to the ocean platform, and meets the power required by production and life.

Description

TECHNICAL FIELD

[0001] The application relates to a floating breakwater integrated with a triboelectric nanogenerator. BACKGROUND

[0002] Ocean platforms are long-term challenged by complex marine environments, and are impacted by extreme weather such as strong wind and waves, typhoons, etc. These impacts can cause platform overturning accidents. A floating breakwater can provide protection for the ocean platform.

[0003] Wave energy, as a clean and renewable energy, has the characteristics of large reserves, high energy density and wide distribution, and has great development potential. Converting the mechanical energy contained in waves into electrical energy can provide power for floating platforms in the ocean, meeting the needs of industrial production and life of the ocean platform.

[0004] Currently, most wave energy collection devices use compressed air to drive turbine generators to generate electricity. To ensure that the waves have sufficient strength to drive the air turbine compressor to work, it means that the current wave energy device is difficult to collect low-frequency wave energy, and the high construction cost hinders the wide application of wave energy utilization technology.

[0005] When two materials are in contact, charges will transfer from one material to another. The greater the difference in the ability of two materials to gain and lose electrons, the greater the amount of charge transfer. When the two materials are separated, a potential difference is formed between the two materials, which in turn drives the movement of charges, thereby forming an electric current and outputting electrical energy. When the surface of the material is formed into a micro-nano structure by micro-processing, the contact area and triboelectric effect can be effectively improved, which forms a triboelectric nanogenerator (TENG). The principle of the triboelectric nanogenerator is as shown in Figure 1

[0006] 1. If the dielectric PTFE (polytetrafluoroethylene), PA (polyamide) and electrode (aluminum) do not carry charges at the beginning, all charges are generated by friction after contact. When PTFE slides to the surface of PA, negative charges will enter the surface of PTFE from the surface of PA. For the positive charges on the surface of PA, since they are always in a stationary state, the potential induced by the two electrodes is constant, and they cannot provide any driving force for the flow on the external load. At this time, the positive charges are gathered on the upper surface of the aluminum-A electrode, as shown in (I) of Figure 1

[0007] ​​2. When the PTFE slides to the right, the triboelectric effect will compensate a negative charge on the surface of the PTFE, and a positive charge on the surface of the right aluminum electrode, the positive charge in the loop will flow from the left electrode to the right electrode through the load, and a left-to-right current will be generated on the external load during the rightward sliding, Figure 1 (II) in the formula (I).

[0008] 3. When the PTFE coincides with the aluminum-B electrode, all the positive charges will flow to the right electrode, Figure 1 (III) in the formula (I).

[0009] Subsequently, the PTFE moves in the opposite direction from the aluminum-B electrode to the aluminum-A electrode, at this time, the moving direction is the same as the direction of the positive charge movement, and a right-to-left current is formed on the load, Figure 1 (IV) in the formula (I). SUMMARY

[0010] The application develops a floating breakwater capable of effectively collecting low-frequency fluctuation energy, and the rear sea area is protected through the energy dissipation effect of the floating breakwater. The rolling generated in the energy dissipation process of the floating breakwater drives the internal nanometer friction generator to work, and converts mechanical energy into electrical energy. When low-frequency waves act on the arc-shaped floating breakwater below, the arc-shaped structure can also produce rolling, and then drive the light nanometer friction generator to work and generate electrical energy. The effect of protection and power generation is formed, thereby providing protection for the offshore platform and solving the problem of power shortage.

[0011] The application uses a sliding independent layer mode friction nanometer generator, uses polyamide (PA) and polytetrafluoroethylene (PTFE) with a large difference in electron gain and loss ability as friction layers, polytetrafluoroethylene (PTFE) as an independent layer, polyamide (PA) as an intermediate isolation layer to completely cover two fixed aluminum electrodes, and the surface layer of polytetrafluoroethylene (PTFE) is etched to generate a nanorod structure through inductively coupled plasma (ICP), so as to effectively improve the contact area and triboelectric effect.

[0012] The technical scheme adopted by the present application is: a floating breakwater integrated with a friction nano power generation device, a semi-cylindrical box-type breakwater, both ends of the box-type breakwater are semicircular, a plurality of concentric semicircular partitions and at least one semicircular partition along the radius direction of the end face of the box-type breakwater are arranged in the box-type breakwater, the semicircular partitions are hollow structures, the semicircular partitions and the partition divide the inner wall of the box-type breakwater into a plurality of arc-shaped cavities, the arc-shaped cavities are through the two ends of the box-type breakwater, each of the arc-shaped cavities has a PTFE friction rod, the inner wall of the semicircular partition is completely covered by a polyamide coating, a plurality of groups of metal electrodes are uniformly distributed on the corresponding part of the inner wall of the semicircular partition, each group of metal electrodes includes a metal electrode A and a metal electrode B which are arranged at intervals, the semicircular partition has a mounting hole A corresponding to the metal electrode A and a mounting hole B corresponding to the metal electrode B, the metal electrode A is fixed at the mounting hole A and is in close contact with the polyamide coating, and the metal electrode B is fixed at the mounting hole B and is in close contact with the polyamide coating.

[0013] A sealing cover is installed at both ends of the box-type breakwater.

[0014] The outer shell of the box-type breakwater, the semicircular partition, the partition and the sealing cover are all made of insulating materials.

[0015] Each of the arc-shaped cavities, the PTFE friction rod in the arc-shaped cavity and the metal electrode group corresponding to the arc-shaped cavity form a power generation unit, all the metal electrodes A on each power generation unit are connected into one through electrode A power transmission line, and all the metal electrodes B are connected into one through electrode B power transmission line, and the electrode A power transmission line and the electrode B power transmission line can be connected with an external power transmission line to supply power to an external load.

[0016] Optionally, each power generation unit includes at least one displacement amplifier, the displacement amplifier includes a cylinder body and a movable top rod, the cylinder body is fixed to the inner wall of the semicircular partition, the cylinder body has a spring therein, both ends of the spring are fixed to the bottom of the cylinder body and one end of the movable top rod respectively, and the other end of the movable top rod extends out of the cylinder body and can contact the PTFE friction rod.

[0017] Optionally, both ends of the box-type breakwater are connected with anchor blocks through mooring ropes.

[0018] Optionally, the PTFE friction rod is provided with a ball pulley at both ends, and the ball pulley can rollingly contact the inner wall of the sealing cover.

[0019] The application has the advantages and positive effects that: the application protects the rear sea area through the energy dissipation of the floating breakwater, and the rolling generated in the energy dissipation process of the floating breakwater drives the internal nanometer friction generator to work, so as to convert mechanical energy into electric energy. When the low-frequency wave acts on the arc-shaped floating breakwater below, the arc-shaped structure can also roll, and then drive the light nanometer friction generator to work and generate electric energy. The effect of protection and power generation is formed, so as to provide protection for the offshore platform and solve the problem of power shortage. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a working principle diagram of the friction nanometer generator in the prior art;

[0021] Figure 2 is a schematic diagram of the overall structure of the embodiment of the application;

[0022] Figure 3 is a side view of Figure 1 ;

[0023] Figure 4 is a side view of Figure 1 ;

[0024] Figure 5 is a schematic diagram of the plane structure of the displacement accelerator in Figure 1 ;

[0025] Figure 6 is a working flow chart of the application;

[0026] In the figure: 1 box type breakwater; 1-1, semicircular partition plate; 1-2, partition plate; 2, PTFE friction rod; 3, mooring rope; 4, anchor block; 5, arc-shaped cavity; 6, aluminum electrode A; 6-1, electrode A power transmission line; 7, aluminum electrode B; 7-1, electrode B power transmission line; 8, polyamide (PA) coating; 9, displacement amplifier; 9-1, movable top rod; 9-2, cylinder body; 9-3, spring; 10, external load; 10-1, external power transmission line. DETAILED DESCRIPTION

[0027] The application will be described in further detail below with reference to the drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] As shown in Figure 2 The present application provides a floating breakwater integrated with a friction nanogenerator, comprising a box-type breakwater 1, a PTFE (polytetrafluoroethylene) friction rod 2, a mooring rope 3, an anchor block 4, an arc-shaped cavity 5, an aluminum electrode A 6, an aluminum electrode B 7, a polyamide (PA) coating 8, a displacement accelerator 9,

[0029] The box-type breakwater 1 has two mooring ropes 3 on each side, and the tail end of the mooring rope 3 is connected to the anchor block 4 located on the seabed,

[0030] The box-type breakwater 1 is in the shape of a semi-cylinder, which is easy to float on the water surface and increase the amplitude of rolling when placed in water. The two ends of the box-type breakwater 1 are semicircular, and the inside of the box-type breakwater 1 is provided with multiple layers of concentric semicircular partitions 1-1 and two semicircular partitions 1-2 along the radial direction of the end face of the box-type breakwater 1. The semicircular partitions 1-1 are hollow structures, and the inside of the hollow structures is used to accommodate aluminum electrodes. The semicircular partitions 1-1 and the partitions 1-2 divide the inner wall of the box-type breakwater into multiple arc-shaped cavities 5. The arc-shaped cavities 5 are through the two ends of the box-type breakwater 1, and each arc-shaped cavity 5 has a PTFE friction rod 2, Figure 3As shown, the inner wall of the semicircular partition 1-1 is completely covered with a polyamide (PA) coating 8, and a plurality of groups of spaced aluminum electrode groups are evenly distributed on the portion of the inner wall of the semicircular partition 1-1 corresponding to the arc-shaped cavity 5. Each group of aluminum electrode groups includes spaced aluminum electrodes A6 and aluminum electrodes B7. The semicircular partition 1-1 has mounting holes A corresponding one-to-one to the aluminum electrodes A6 and mounting holes B corresponding one-to-one to the aluminum electrodes B7. The aluminum electrodes A6 are fixed at the mounting holes A and are in close contact with the polyamide (PA) coating 8. The aluminum electrodes B7 are fixed at the mounting holes B and are in close contact with the polyamide (PA) coating. Each arc-shaped cavity 5, the PTFE friction rod 2 in the arc-shaped cavity 5, and the aluminum electrode group corresponding to the arc-shaped cavity 5 form a power generation unit.

[0031] Sealing covers (not shown) are installed at both ends of the box-shaped breakwater 1 to seal the interior of the power generation unit;

[0032] The outer shell, semicircular partition 1-1, partition 1-2 and sealing cover of the box-type breakwater 1 are all made of insulating materials;

[0033] like Figure 4 As shown, all aluminum electrodes A6 on each power generation unit are connected in parallel or in series through electrode A transmission line 6-1, and all aluminum electrodes B7 are connected in series or in parallel through electrode B7 transmission line 7-1. Electrode A transmission line 6-1 and electrode B transmission line 7-1 can both be connected to an external transmission line 10-1 to supply power to an external load 10.

[0034] The box-shaped breakwater 1 acts as a wave energy capture device. Under the action of waves, the box-shaped breakwater will produce sufficient roll. The PTFE friction rod 2 placed in the arc-shaped cavity 5 will move and rotate within the arc-shaped cavity 5 as the box-shaped breakwater 1 rolls. During this movement and rotation, it rubs against the polyamide (PA) coating 8 attached to the inner wall of the arc-shaped cavity 5. Negative charges will enter the surface of the PTFE friction rod 2 through the surface of the PA coating 8. At this time, the PTFE friction rod 2 is negatively charged, the polyamide coating 8 is positively charged, the aluminum electrode A6 is positively charged, and the aluminum electrode B7 is negatively charged. When the PTFE friction rod 2 slides with the waves, it produces relative displacement between the two metal electrodes in the metal electrode group. The positive charge will flow from one metal motor in the metal electrode group to the other metal motor through the external load 10, forming a current in the external load 10, thereby outputting electrical energy.

[0035] Each power generation unit includes at least one displacement amplifier 9, such as Figure 5As shown, the position amplifier 9 includes a cylinder 9-2 and a movable top rod 9-1, the cylinder 9-2 is fixed to the inner wall of the semicircular partition 1-1, the cylinder 9-2 has a spring 9-3 inside, the two ends of the spring 9-3 are respectively fixed with the bottom of the cylinder 9-2 and one end of the movable top rod 9-1, the other end of the movable top rod 9-2 extends out of the cylinder 9-2 and can contact with the PTFE friction rod 2, the PTFE friction rod 2 reaches the edge of the arc-shaped cavity and contacts with the position accelerator 9, the spring 9-3 inside the cylinder 9-2 is compressed through the movable top rod 9-1, when the box-type breakwater 1 slides to the other end, the spring 9-3 releases the elastic force, increases the speed of the PTFE friction rod 2, accelerates the displacement in unit time, and further increases the power generation.

[0036] In order to reduce the friction between the two ends of the PTFE friction rod 2 and the sealing cover, a ball pulley (not shown in the figure) is arranged at the two ends of the PTFE friction rod 2, which rolls in contact with the sealing cover.

[0037] The above describes the embodiments of the present application in detail, but the content described is only the preferred embodiments of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made according to the scope of the present application should still belong to the patent scope of the present application.

Claims

1. A floating breakwater integrated with a triboelectric nano-power generation device, characterized by: A semi-cylindrical box-type breakwater, wherein both ends of the box-type breakwater are semicircular, and the interior of the box-type breakwater is provided with multiple layers of concentric semicircular partitions and at least one partition along the semicircular radius of the end face of the box-type breakwater, wherein the semicircular partition is a hollow structure, and the semicircular partition and the partition divide the inner wall of the box-type breakwater into a plurality of arc-shaped cavities, wherein the arc-shaped cavities are connected with both ends of the box-type breakwater, and each of the arc-shaped cavities has a PTFE friction rod, and the inner wall of the semicircular partition is coated with a polyamide coating. Completely covering, a plurality of groups of spaced metal electrode groups are evenly distributed on the inner wall of the semicircular partition corresponding to the arc-shaped cavity, each group of the metal electrode groups includes spaced metal electrodes A and metal electrodes B, and the semicircular partition has mounting holes A corresponding to the metal electrodes A and mounting holes B corresponding to the metal electrodes B. The metal electrodes A are fixed at the mounting holes A and are in close contact with the polyamide coating, and the metal electrodes B are fixed at the mounting holes B and are in close contact with the polyamide coating; Sealing covers are installed at both ends of the box-shaped breakwater; The outer shell of the box-type breakwater, the semicircular partition, the partition and the sealing cover are all made of insulating materials; Each arc-shaped cavity, the PTFE friction rod in the arc-shaped cavity and the metal electrode group corresponding to the arc-shaped cavity form a power generation unit. All the metal electrodes A on each power generation unit are connected as a whole through the electrode A transmission line, and all the metal electrodes B are connected as a whole through the electrode B transmission line. The electrode A transmission line and the electrode B transmission line can both be connected to an external transmission line to supply power to an external load.

2. The floating breakwater integrated with the triboelectric nano-power generation device according to claim 1, characterized in that: Each of the power generation units includes at least one displacement amplifier, and the position amplifier includes a cylinder body and a movable push rod. The cylinder body is fixed to the inner wall of the semicircular partition. There is a spring in the cylinder body. The two ends of the spring are respectively fixed to the bottom of the cylinder body and one end of the movable push rod. The other end of the movable push rod extends out of the cylinder body and can contact the PTFE friction rod.

3. The floating breakwater with integrated triboelectric nano-power generation device according to claim 1 or 2, characterized in that: Both ends of the box-type breakwater are connected to anchor blocks via mooring ropes.

4. The floating breakwater integrated with the triboelectric nano-power generation device according to claim 3, characterized in that: Ball pulleys are provided at both ends of the PTFE friction rod, and the ball pulleys can be in rolling contact with the inner wall of the sealing cover.

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